Panel-board construction.



H. F. STABRETT.

PANEL BCOARD CONSTRUCTION, APPLICATION FILEDIJUNE s. 1917.

Patented Nov. 11, 1919.

2 SHEETS-SHEET I.

"H. F, ST ARRETI. PANEL B0 110 cowsmucnow. APPLICATION FILED IUIIES. I917.

Patented Nov. 11, 1919.

2 SHEETS-SI1EET 2- UNITED STAT F. STABRETT, OF CHICAGO, ILLINOIS, ASSIG-NOR ,TO STARRET'I' MANUFACTUR- ING GOME'AHY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PA NEL-BOABD GONSTBUCTON.

Specification of Zettersl'atent.

Patented Nov. 11, 1919.

Original application filed Iune 13, 1911, Serial 110.832883. Divided and'this application filed June 6, 1917.

' Serial No. 173,147. g

. To all whom it may concern:

Be it known that 1, Honey F. S'rA um'n, a citizen of the United States, residing at Chicago, in the county of Cook and btate- My invention relates to improvements in panel-board construrtlon.

One of the objects of my invention 18 to provide improved means for mounting the switches on the face of the panel-board. Further objects will appear from the detailed description to follow and from the appended claims.

For the purpose of disclosing my invention, 1 have illustrated two embodiments thereof in the accompanying drawings, in which- Figure 1 is a front elevation of a panelboard construction showing a switch and fuse-receptacles mounted thereon;

Fig. 2 is a section on the line Fig. 1;

Fig. 3 is avertical section of a panelboard showing a modified construction of the switch and fuse-receptacle mounting; and

Fig. 4 is a detail perspective of one of the contactclips.

Referring now to the drawings in detail, and first to the-form shown in Figs. 1 and 2, the panel-board construction here shown comprises a panel-board section 10 on which various circuit arrangements and fuse-devices may be arranged, and an extension section 11 connected to the section 10 and which in the present instance is' shown as carrymg a fused main-line switch. 1 have illustrated in Figs. 2/ and '3 twomethods of mounting the switches and fusereceptacles. In Fig. 2 the method is the preferred form, wherein the switch may be ,.att ached or removed from the front of the board without-disturbing any distributing circuits. As the method for mounting the contact clips of the switch and \the fusereceptacle clips is the same, I will refer specifieally to only the switch mounting for description.

r The anchor-stud 12 for mounting the pivot-post 13 of the switch on the insulating base 11 of the section 11 is similar in construction to the anchor-stud 5 described in my prior application Serial No. 632,883, filed June 13, 1911, title panel-board,'of which application this present application is a division and continuation.

As shown in Fig. 2, the anchor-stud-12 is headed at 15 and has aportion 16 extending through-a hole in the base 14. The lower end of this stud is restricted and screwthreadcd, as at 17, and is adapted to receive a nut 18 for assisting in holding the anchorstud in position on the bases Preferably interposed between the nut 18 and the base 11L is a washer 19. The conducting 1ne1nhers or bus-bars20 are provided with openings at the proper position to fit over the screw-threaded portion 17, and after the conductor is placed in position it is secured by aflcasting process; that is, a mold is secured in position over the end of the stud 12 and a securing metal-which may be brass or any other desired soldering metal-- is poured into the mold, thereby Joining the conductor member and the stud by a solid mass and forming an integral metal conduc crating means. By this construction the pivot-post 13 carrying the s\\'itcli-l ever 21 can be removed from the base 11 from the front side without disturbing the distributing circuits in the rear, simply by removing the scrcws 22.

The panel-board section 11 comprises. in addition to the insulating base 14, a backing 25 the edges of which fitagainst the base 11 and between which and the base 14 the distributing circuits are inclosed. After the electrical nnections' have been made the backing 2.) is placed in position, 11 insulating compound 26 is poured in, hich com pletel fills theehamber between] the base 11 and t 1e backing 25, and in w ich the dis- .tributing conductors on thelick of the base 14mm embedded.

pair of downwardly-extending projections 33 which are preferably formed by. striking down a portion of the metal of the base. These two projections or lugs are adapted to fit into the slots 29 on the anchor-studs 27 prevent the fuse-receptacle clips from turning.

' The wire connection-terminals 34 of the section 11- are sunllar in construction to the wire connection-terminals of the panel-board shown in my earlier application Serial No.

' 632,883 referred -to above, and need not be herein specificallj described.

' In addition to the'wire connection-terminals 34, I m. provide connection-terminals 35 by which t e section 11 may be connected with the section 10. These connections are similar in construction to the various anchor-studs shown in my prior application referred to, and described in connection with the mounting for the pivot-post l3 and need not be herein specifically described.

In connecting the section 11 to the section 10 the-wire connection-terminals are removed from the section 10 and the sections 10 and 11 are connected together mechanically and electricall bymeans of conned tion-strips 36, whici it will be noted are secured in position by the removable screws 37 of the anchor-studs.

in Fig. 3.1 have illustrated a different method of securing the fuse-contacts and switches in position. In this form a small screw 38 is provided, which extends through an opening in the base 39 and is headed over the base 30 of the fuse-receptacle. The switch contact members and posts are socured in position by being provided with extension screws 40, which extend through and areconnected to the bus-bars 4:1 in a manner which has been described .with respect to the connecting posts of my earlier application and also with respect to the anchor-studslQ of the form of my invention shown in Figs. 1 and 2 of this present a plication. 'This method does not permit tli e removal from the front of the board of the fixed'contacts and fuse-contacts;-

I have'described the specific construction of fixed contacts in connection with the separable section of the board. It will be understood, however, that in the event 1t is de-" sired to use switches on the panel-board in base member 30 having upstanding connection with the branch extensions shown 1n my parent application, these switches may ,be mounted in the manner described with rc-' spect to the extensions; likewise, if it is desired to use fuse-receptacle contacts for the N C. fuses, the fuse-contacts-or contact receptacles such as-descri'bed with respect to the separable section of the board may be used on the panel-board; also, if desired, the

Edison fuse-receptacles may be used on. the separable portion of the board. In fact, the various anchor-receptacles and other portions are interchangeable and may be used of the panel, a switch electrically connected in series with said conductors, means for detachably securing said switch in position on said plate accessible from the front of the plate for attaching and detaching the switch, v

and means for holding said conductors in position with respect to said panel independentl of said securing means -for the switch.

2. If. a switch, an insulating plate, anchora ,e and conductor means supported by said.

pmte and extending therethrough, conductors at the rear of said plate electrically connected in series to said anchorage and conductor means, main line terminals positioned on the front of said plate and connected in series to said conductors, and a switch electrically connected in series with said con-' ductors supported on the front of said plate and detachably connected with said anchorage and conductor means and removable from the frontof the plate without disturbing said conductors.

In a switch, an insulating plate, anchorage and conductor means supported by said plate and extending theretlirough, conductors at the rear of said plate electrically connected in series to said anchorage and conductor means, the front face of said plate, said switch com- '11s a swltch supported on prising a fixed contact electrically connected :in series with said conductors and detachably connected with said anchorage and conductor means and removable from the front side of the plate without disturbing-said con- ,ductor means and a movable contact for engagement with said fixed contact also detachably connected in series withsaid anchorage and conductor means and removable from the front side of the plate, without disturbing said conductor means.

4. In a switch, aninsulating plate, conductors supported at the rear ofsaid plate,

anchorage and conductor means supported plate, and means electrically connecting said switch in series withsaid conductors and mechanically connecting it with said anchorage means comprising a member threaded into said internally-tl1readed member, whereby said switch can be atmeans without disturbing said conductors.

5. In a device of the class described,-an

- insulating base, anchor studs of conducting' material supported thereby and extend: ing therethrough, a system of conductors supported by said base and concealed from the irontcthereof and electrically connectedin series'with said anchor-studs, a circuitcontrolllng switch supported on the front face of said base, and means for mechanically connecting said switch with said an ch01" studs accessible for removal from the I 1 front of said base, tached to and detached from said anchoring 4 ,said means connecting said witch in series with said anchor studs.

In witness where0f,I have'hereunto sub-- scribed my name".

- HENRY FfiSTARRETT. 

